Security Advisory

CVE-2025-58186

5.3
MEDIUM

Vulnerability Description

Despite HTTP headers having a default limit of 1MB, the number of cookies that can be parsed does not have a limit. By sending a lot of very small cookies such as "a=;", an attacker can make an HTTP server allocate a large amount of structs, causing large memory consumption.
Published Date October 29, 2025
Official Source NIST NVD Advisory